Dark spots on Teddy’s testicles may be due to melanin deposition, lack of cleaning, or mites. If the dog does not feel itching, it is not a serious problem. The hair of Teddy dogs is relatively long, so it is easy to not clean it properly. It is best to be careful when bathing. After washing, the hair should be dried to avoid the breeding of bacteria. The dog should be dewormed regularly to avoid infection with parasites. Cause skin diseases; if the dog is older, it may be melanin deposition.